package collection;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class SortPoint {
    public static void main(String[] args) {
        List<Point> list = new ArrayList<>();
        list.add(new Point(5,8));
        list.add(new Point(15,60));
        list.add(new Point(17,89));
        list.add(new Point(1,4));
        list.add(new Point(10,8));
        list.add(new Point(22,35));
        System.out.println("list原始数据:"+list);

        list.sort(new Comparator<Point>() {
            public int compare(Point o1, Point o2) {
                return  o1.getX()-o2.getY();
            }
        });
        System.out.println("list排序后数据:"+list);

//        Collections.sort(list, new Comparator<Point>() {
//            public int compare(Point o1, Point o2) {
//                int len1 = o1.getX()*o1.getX()+o1.getY()*o1.getY();
//                int len2 = o2.getX()*o2.getX()+o2.getY()*o2.getY();
//                return len2-len1;
//            }
//        });
//        System.out.println("list排序后数据:"+list);
        Collections.sort(list,(o1, o2) -> {
            int len1 = o1.getX()*o1.getX()+o1.getY()*o1.getY();
            int len2 = o2.getX()*o2.getX()+o2.getY()*o2.getY();
            return len2-len1;
        });
    }
}
